I currently have aftermarket 20 x 8.5 +40 Katana GT10s on my Maxima and I'm looking to upgrade once again to a 10 inch+ width and I need to know what offsets are appropriate so that I have enough clearance inside around the suspension / braking components etc. and outside within the fender.

I drive an SE which rides on 18 x 7.5 +40mm wheels, stock.

Q: How much inner clearance and extra outer clearance can the Maxima handle?